Method of and apparatus for forming tying strips and applying the same to bags



A. POTDEVIN 5 Sheets-Sheet 1 AND APPLYING THE SAME T0 BAGS Flled May 3, 1937 METHOD OF AND APPARATUS FOR FORMING TYING STRIPS INVENTOR W @222);

A. POTDEVIN Oct. 24, 1939.

METHOD OF AND APPARATUS FOR FORMING TYING STRIPS AND APPLYING THE SAME T0 BAGS Filed May 3, 1937 5 Sheets-Sheet 2 N Q O T v A INVENTOR Oct. 24, 1939. POTDEVIN 2,177,117

METHOD OF AND APPARATUS FOR FORMING TYING STRIPS AND APPLYING THE SAME T0 BAGS Filed May'IS, 1937 5 Sheets-Sheet 3 ATTORNEYS Oct. 24, 1939. A. POTDEVIN 2,177,117

METHOD OF AND APPARATUS FOR FORMING TYING STRIPS AND APPLYING THE SAME T0 BAGS Filed May 3, 1937 5 Sheets-Sheet 4 INVENTOR S SheetS-Sheet 5 k. KL-

A. POTDEVIN Filed May 3, 1937 AND APPLYING THE SAME TO BAGS METHOD OF AND APPARATUS FOR FORMING TYING STRIPS Oct. 24, 1939.

INVENTOR W QM Y WW ATTORNEYS Patented Oct. 24, 1939 PATENT OFFICE METHOD OF AND APPARATUS FOR FORM- ING' TYING STRIPS AND APPLYING THE SAME TO BAGS Adolph Potdevin, Garden City, N. Y., assignor to Potdevin Machine Company, Brooklyn, N. Y., a corporation of New York Application May 3, 1937, Serial No. 140,436

10 K Claims.

This invention relates to an improved and novel machine for applying a metal tie strip to the end of bags of the type known commercially as metal tie bags. In such bags a small metal strip extending transversely of the bag is applied to the open end of the bag and when the bag is to be closed the strip and bag end are rolled over upon the bag several times and the ends of the tie strip bent over the bag body. This holds the bag closed and does away with the use of twine or other tying means. An example of a metal tie bag is found in Patent No. 2,018,228, dated October 22, 1935.

The machine of this application is full auto-' matic in its operation and is adapted to form the tie strips and apply the same to the bag in a continuous operation.

More specifically the present invention provides an automatic machine wherein paper tape and metal tape are continuously drawn from supplyreels, the metal enclosed in the paper and the strip thus provided fed continuously through the machine adjacent the open end of the bags which are also being continuously advanced through the machine. As the tie strip and bags advance the strip is automatically attached to the bags, out into proper lengths and the bags with the strip attached discharged successively from the machine.

' In the accompanying drawings:

Fig. 1 is a side elevational view of a machine embodying my invention;

Fig. 21s a plan view;

Fig. 3 is an end view of the machine taken at the. charging end;

Fig. 4 is a part sectional elevational view of the cam mechanism by which the bags to which the tie strips are to be applied are fed forward into the machine;

Fig. 5 is a view of this same part of the ma- :Ihine but with the cams, etc., in a different posi- Fig. 6 is a section on the line 6-4 of Fig. 3 looking toward the feed end of the machine:

Fig. '7 is a section on the line 1-1 of Fig. 6;

Fig. 8 is a section on the line 3-8 of Fig. 2;

Fig. 9 is a section on the line 9-9 of Fig. 2;

Fig. 10 is a section on the line lO-lli of Fig. 2;

Fig. 11 is a section on the line I l--li of Fig. 2;

Fig. 12 shows a section of an end of the completed bag; and

Fig. 13 illustrates the various stages of making up the tie strip and attaching the same to the end of the bags as the same are passing through the machine.

Referring to the drawings in detail: Bags 2 are taken from a magazine 4 located at the charging end of the machine and passed through the machine continuously while traveling laterally. During the advance of the bags a metal strip 6 enclosed in the paper tape 8 and constituting the tie strip is applied to the projecting flap III which is provided for this purpose at the open end of each bag.

The metal tape 6 and the paper tape 8 are taken from supply spool: 12 and i4, respectively, the paper tape being folded about the metal strip as the two progress through the machine.

The supply bags 2 are stacked at the magazine 4 on a table or bed IS. The bags in the stack lie transversely of the machine, and are fed forward successively from the bottom of the stack, with the bag bottom in the lead, into position to be picked up by the forwarding mechanism which forwards the bags laterally toward the discharge end of the machine.

Referring particularly to Figs. 2, 3, 4 and 5 of the drawings, it will be seen that the magazine table or bed 16 is provided with an opening iii in the bottom thereof, the bags being disposed on this table or bed so that the flap 20 of the bag bottom of the lowermost bag of the stack will sag downwardly through this opening, as seen in Fi 3.

Beneath the magazine table or bed 16 are a pair of forwardly jaws designated 22 and 24. The Jaw 22 is afllxed to an arm 26, the jaw and arm being pivoted on a stud 28. The jaw 24 is affixed to arm 30 also pivoted on a stud 28 which is carried on the free end of a lever 32 pivoted intermediate its ends on shaft 34.

The free end of the arm 26 carrying the jaw 22 is provided with a cam follower 36, the free endof the arm 30 for the jaw 24 with a cam follower 38 and the free end of lever 32 with a cam follower 40. The cam follower 36 cooperates with a cam 42 and the cam follower 38 cooperates with a cam 44. Both of these cams are mounted on the shaft 34. The cam follower cooperates with cam 46 on'a shaft 48.

The operation of the jaws 22 and 24 and the various cams controlling the same will be described in full detail hereinafter but at this point I would like to'say that this mechanism is so arranged that at the proper time the laws 22 and 24 will close upon the flap 20 at the bottom end of the lowermost bag in the stack of bags and then .pivot in a forward direction away from the magazine to drag the end of the bag out of the stack and move it forward sumciently for the same to be engaged between a pair of forwarding rollers 58 which are mounted" to rotate about axes extending lengthwise of the machine, the jaws 22 and 24 upon delivering each bag to these rollers opening and then returning to their original position to receive the next bag.

The forwarding rollers 58 deposit each bag crosswise of the machine upon a table or'bed 52 provided with slots 54 extending lengthwise of the machine. This table 52 is provided with a side plate 56 and an end plate 58 for promoting properpositioning of the bags on the table. These plates are adjustable so as to accommodate the machine to bags of diiferentlengths as well as to bags of different widths. As each bag is deposited upon the table or bed 52 it is engaged by a pusher 68 which is reciprocated lengthwise of the machine. The forward end of this pusher is bent downwardly, as seen in Fig. 6, to provide a flange 62 which engages the side of each bag as the same is deposited on the plate 52 to move the bag laterally lengthwise'of the machine to forwarding rollers 66. The rollers 66 deliver the bags between upper and lower forwarding chains designated 68 and 18, respectively.

Reverting to the pusher mechanism by which the bags are pushed from the table 52, it will be seen that webs 12 are secured to the underside of the pusher plate 68. These-webs are carried bya plate 14 mounted on rails "extending lengthwise of the machine. Secured to the plate 14 is a short arm 18 pivoted to the plate at 88, this arm being pivotally attached to a lever 82 carried by shaft 84. The shaft 84 also carries crank arm 86 pivotally connected to connecting rod 88, the free end of which is attached to crank disc 98. The connection of the connecting rod 88 to the crank arm 86 is adjustable so that the throw of the arm or lever 82 and hence throw of the pusher 68 may be adjusted to accommodate bags of different widths.

94 designates the driving motor for the ma-- chine. v "This motor, through a sprocket and chain drive, drives a pinion 96 meshing with a spur gear 98 mounted on a stub shaft which carries a gear I88. The gear I88 meshes with gear I82 mounted on shaft I84 carrying pinion I86, the latter meshing with a pinion I88 in mesh with a pinion II8 on shaft H2. The latter extends longitudinally of the machine toward the charging end thereof where the shaft terminates. This end of the shaft carries a gear II3 meshing with wide faced gear II4, the gear II4 meshing witha gear I I6 on the shaft 34 carrying the cams 42 and 44. The opposite end ofLthis cam shaft 34 carries a gear II8 meshing with gear I28 in mesh with gear M2 on the shaft carrying the lower roller of the two forwarding rollers 58, this shaft carrying a gear I26 in mesh with gear I28 on the shaft of the upper rollers of the forwarding rollers 58.

This provides a drive for the forwarding rollers 58 and for the cams 42 and 44.

Below the cam shaft 34 is the cam shaft 46 carrying the cam 46 and this shaft is also driven off the gear II8 through gear I38. The shaft 48 carries bevel gear I32 meshing with bevel gear I34 on the shaft I36 carrying the crank 98.

It is to be noted that the grippers 22 and 24, their controlling cams, the forwarding rollers 58, and the gear trains for driving the cams and forwarding rollers, as well as the crank for driving the pusher 68 can be adjusted transversely of the machine by hand wheel I9I.

The drive for the forwarding chains 68 and 8 is from a pinion I 88 on the stub shaft I 84, gears I 48, I42, I44, bevel gears I46 and I48 which drives shaft I58 carrying the sprocket for the lower chain 18. This shaft I58 carries gear I52 meshing with gear I54 on the shaft I56 carrying the upper chain 68..- This gear train will drive the lower lead of the chain 68 and the upper lead of the chain 18 in the same direction toward the delivery end of the machine.

Referring to Fig. 7, it will be seen that the upper lead of the lower chain 18 rides along depressed tracks I68 in the machine bed I58 while the chain 18 by springs I64. This provides for gripping the bags so as in effect to attach the bags successively to the forwarding chains for advancement.

As above stated the metal tape 6 forming part of the tie strip is taken from, the supply reel I2. This reel lies beneath the machine and the tape is drawn upwardly to the machine bed and then forward toward the discharge end of the machine by feed rolls I66 and I68. The roll I2 is equipped with suitable retarding mechanism I18 to prevent overrunning. The metal tape as it is drawn upwardly passes about guide rolls I12, I14, I16, I18, I88, I8I, I82 'and roller I84 which is carried on the same shaft I86 as the idler sprockets I88 for the lower chain 18.

The paper tape 8 which is taken from the reel I4 and which is to enclose the metal tape 6 before the latter is placed in position on the bags 2 is also forwarded by the feed rolls I 66 and I 68.

This tape passes from the reel I4 about guiding ,and tensioning rollers I98, between roller I92 and gluing roller I93 where three stripes of adhesive are continuously applied to the face of the tape. These stripes are designated I94, I95 and I91.

Thepaper next passes about the rollers I88, I8I, and I82, previously referred to. The roller I82, as will be seen from Fig. 7, is so shaped that as the paper tape passes the same one edge of the tape will be turned inwardly over and upon the metal tape 6 to bring the adhesive stripe I91 into engagement with the face of the metal tape. As the paper tape and metaLtape continue their forward movement a stripe of adhesive I98 is applied to the turned-over part of the tape, as shown in Fig. 7. This stripe is appliedby the striper I 98.

' bags travel lengthwise .of the machine they pass a plate 284 which deflects that portion of the paper tape carrying the adhesive stripe I94 over upon the upper face of the flap I8 of the bags. The tapes and bags then pass beneath a hinged plate 288, to the rollers I 66 and I68 which press the tapes and bags together.

The tie strip is continuous, as will be understood, and after it has passed the rollers I66 and I68 it is cut off between adjacent bags 2 by a striker bar 2. After the tie strip has been severed the chains 68 and 18 continue the lateral advance of each bag with tie strip attached until the same is picked up by discharge rollers 2I6 by which the bags are successively discharged into a. receiving trough 2I8. The discharge rollers 2I6 are geared together and are driven off the gear I54.

The feed rollers I66 and I69 are driven off the gggr I52 through intermediate gear I53 and gears The shaft I86 which carries the sprocket I98 for one end of the lower forwarding chain I0 is provided with a gear 222 meshing with a pinion 224 which in turn meshes with pinion 226 on the shaft of the lower pair of forwarding rollers 66,

this gear meshing with gear 230 on the shaft of the upper pair of forwarding rollers 66.

The drive for the adhesive-applying roller I93. is through a belt'or chain 234 the pulley for which is driven by gear 236 meshing with gear 238 on the shaft I86 carrying one of the sprockets for the lower' chain III as already described. For

purposes of threading the machine initially the roller I92 which cooperates with the adhesiveapplying disc I93 is mounted on a pivoted arm 240 to which is attached an arm 242. This arm is provided with a notch 244 adapted to engage the shaft 246 which mounts theroller I82. By lifting up the roller I92 and engaging the notch 244 with the shaft 246 the roller I92 will be held out of cooperative relation with the adhesive-applying disc I93.

Likewise for purposes of threading the machine or for any other purpose desired, the adhe sive-applying disc I99 can, be'movedto one side out of engagement with the paper tape passing the same. This disc is mounted in bearings carried by a glue pot 246 which is pivotally mounted on rod 250. An extension 252 at one end of this glue pot normally engages a stop 254 as shown in Fig. 6 which holds the disc in engagement with the paper tape. The stop 254 is notched and when the disc is to be moved out of engagement with the paper it is simply necessary to move the outer end of the extension 252 into this notch which, it will be apparent, will hold the disc in the dotted line position shown in Fig. 6. The other end of the glue pot is provided with a weight 255 which assists the spring 251 in holding the glue pot either in the full line position or the dotted line position of Fig. 6.

Referring to Fig. 2 of the drawings, the plate 208 beneath which the ends of the bags and the tying strip are passed during their travel through the machine is hinged as shown at 256.

It will be seen from all of the foregoing that the present invention provides an automatic machine so constructed and arranged that bags are continuously taken from a supply stack and forwarded laterally through the machine. At the same time paper tape and metal tape are continuously fed lengthwise through the machine in superposed relation to each other, adhesive being applied to the paper before the samecontacts the metal strip and the paper being wrapped about the metal, these two tapes finally being brought into superimposed relation with respect to the laterally traveling bags, whereupon the paper tape is folded over and attached to the bags. Prior to the discharge of the bags from the machine the taps, which constitute the tying strip, aresevered between adjacent bags so that in the finished bag we find a tying strip made up of paper and metal attached to the projecting flap on the open end of the bag with the ends of the tying strip projecting a short distance beyond the sides of the bag.

It is to be understood that the details of construction and arrangement of parts herein shown and described may be varied without departing from the spirit and scope of my invention.

What I claim is:

1. The method which comprises progressively enclosing a traveling continuous metal tape within a traveling continuous paper tape with a portion of the paper tape projecting beyond the edge of the enclosed metal tape, advancing the composite strip thus formed lengthwise together with a plurality of laterally moving bags, with the bags and the said projecting portionof the strip in superimposed relation, and folding the enclosed portion and the projecting portion of the advancing strip about the end of one wall of .each bag and securing the same thereto.

2. The method which comprises advancing metal tape in superimposed relation to paper tape of greater width than the metal tape, progressively folding the paper tape about the metal tape and securing the two together to provide a continuous composite strip with the paper projecting from one side thereof, advancing the composite strip and a plurality of bags each having a projecting flap at one end with the flap in superimposed relation to the projecting portion of said strip while attaching the metal enclosing portion of the paper tape to one face of one wall of the bag and folding the remainder of the paper over upon and attaching the same to the other faceof said bag wall.

3. A machine of the class described comprising in combination, a bag stack, pivoted grippers for gripping the bottom of the lower bag of the stack and withdrawing the same from the stack, forwarding mechanism for receiving the withdrawn bags and advancing the same laterally toward the discharge end of the machine, feed rollers for drawing a continuous tying strip through the machine with the strip extending transversely of the bags and adjacent the open end thereof,

and a folder for folding part of the tying strip over upon the upper face of the lower wall of each bag as the bags and strip are advancing.

A machine of the class described comprising in combination, grippers for successively withdrawing bags from a stack, a pusher for moving the bags laterally and successively, forwarding rollers for receiving the bags, chains for receiving the bags and advancing them laterally through the machine, feed rollers for drawing a continuous tying strip beneath the ends of the bags being forwarded by said chains, and a folder for folding the tying strip over the ends of the bags.

5. In a machine of the class described, the combination of a spool of metal tape, a spool of paper tape. means for drawing the tapes continuously from said spools, adhesive-applying means for applying adhesive to one face of the paper tape, guides for thereafter bringing the metal tape into contact with the adhesive-carrying face of the paper tape and to fold the paper tape over upon the face of the metal tape, adhesiveapplying means thereafter to apply adhesive to the face of the turned over paper tape, guides for guiding the composite strip thus formed into juxtaposition to the end of a traveling bag with the adhesive in contact with the underside of one wall of the bag, and deflecting means for folding the paper tape over upon the upper face of said wall of the bag to contact the adhesive carried by the tape with the upper face of said bag wall whereby the composite strip is secured to both faces of said bag.

6. The method which comprises continuously advancing a stripof paper tape, applying adhesive to said tape, continuously advancing a strip of flat metal tape in superimposed relation to said paper tape, folding one edge of said P p tape over upon said metal tape adhesively to secure the same thereto, continuously advancing a plurality of bags with the open end of each bag insuperimposed'relation to the unfolded portion of said paper tape and during the travel of the bags and tapes contacting one face of one wall of the open end of each bag with the unfolded adhesive-carrying face of said paper tape and finally folding over the portionof said paper tape-containing said metal tape upon the opposite face of said wall to bring the adhesive of the tape into contact with said opposite face thereby adhesively to enclose the edge of one wall of. the bag in said composite strip.

'7. The method which comprises continuously advancing a strip of paper tape applying adhesive to said tape, continuously advancing a strip of flat metal tape in superimposed relation to said paper tape, folding one edge of said paper tape over upon said metal tape adhesively to secure the same thereto, applying a strip of adhesive to the outer face of said folded over edge, continuously advancing a plurality of bags with the open end of each bag in superimposed relation to the unfolded portion of said paper tape and during the travel of the bags and tapes contacting one face-of one wall of the open end of each bag with the unfolded adhesive-carrying face of said paper tape and finally folding over the said folded over adhesive-bearing edge of said paper tape containing said metal tape upon the opposite face of said bag wall to contact the adhesive of the tape with said opposite face of said bag wall thereby adhesively to enclose the edge of one wall of the bag in said composite strip.

8. The method which comprises continuously advancing a strip of paper tape, applying adhesive to said tape, continuously advancing a strip of flat metal tape in superimposed relation to said paper tape, folding one edge of said paper tape over upon said metal tape adhesively to secure the same thereto, continuously advancing a plurality of bags each having a projecting flap at its open end with the said flaps in superimposed relation to the unfolded portionv of said paper tape and during the travel of the bags and tapes contacting one face of said flap with the unfolded adhesive-carrying face of said paper tape and finally folding over the said folded over adhesivebearing edge of said tape containing said metal tape upon the opposite face of said flap thereby to contact the adhesive with said opposite fiap face to enclose the edge of one wall of the bag in said composite strip.

9. The method which comprises continuously advancing a strip of paper tape, applying a continuous stripe of adhesive to said tape, continuously advancing a strip of flat metal tape in superimposed relation to said paper tape, folding one edge of said paper tape over upon said metal tape adhesively to secure the same thereto, applying a stripe of adhesive to the outer face of said folded over edge, continuously advancing a plurality of bags each having a projecting flap at its open end with the said flaps in superimposed relation to the unfolded portion of said paper tape and during the travel of the bags and tapes contacting one face of said flap with the unfolded adhesive-carrying face of said paper tape and finally folding over the said folded over adhesive-bearing edge of said tape containing said metal tape upon the opposite face of said fiap thereby to contact the adhesive with said opposite fiap face to enclose the edge of one wall of the bag in said composite strip.

10. The method which comprises continuously advancing a strip of paper tape, applying a plurality of continuous parallel adhesive stripes to said tape, continuously advancing a strip of flat metal tape in superimposed relationto said paper tape and intermediate said adhesive stripes, folding one edge of said paper tape bearing an adhesive strip over upon said metal tape to secure the same thereto, applying a stripe of adhesive to the outer face of said folded over edge, continuously advancing a plurality of bags with the open end of each bag in superimposed relation to the unfolded portion of said paper tape and during the travel of the bags and tapes contacting one face of one wall of the open end of each bag with the unfolded adhesive-carrying face of said paper tape and finally folding over the said folded over adhesive-bearing edge of said tape containing said metal tape upon the opposite face of said wall to contact the adhesive with the said opposite wall face thereby to enclose the edge of one wallof the bag in said composite strip.

ADOLPH POTDEVIN. 

